Wire gauze is an important piece of supporting equipment in a laboratory as glassware cannot be heated directly with the flame of a Bunsen burner, and requires the use of a wire gauze to diffuse the heat, helping to protect the glassware. Glassware has to be flat-bottomed to stay on the wire gauze. What is…

Definition of finite 1a : having definite or definable limits a finite number of possibilities. b : having a limited nature or existence finite beings. 2 : completely determinable in theory or in fact by counting, measurement, or thought the finite velocity of light. What is a finite number? Finite number may refer to: A…

Variables are all the quantities that could change in an experiment. Typical variables in a chemistry experiment include: nature of a substance. concentration. volume. What are the 3 variables of an experiment? There are three main variables: independent variable, dependent variable and controlled variables. How do you define variables? A variable is any characteristics, number,…

: to remove color from decolorize vinegar by adsorption of impurities on activated charcoal. What is decolorization in organic chemistry? Decolorization refers to the process of removing brightly colored organic impurities from the sample mixture. The procedure is usually carried out in the solution phase after the solid product and impurities are dissolved in a…

DBE Value 3 = three pie bonds or one triple bond + one double bond or three rings or two rings + one double bond or one ring + 2 double bonds. What is double bond equivalent with example? As in simple words, the double bond equivalent is the number of double bonds and number…

Deposition is the transition of a substance directly from the gas to the solid state on cooling, without passing through the liquid state. Examples: Camphor, Iodine, Ammonium Chloride, Naphthalene, etc. What does the meaning of deposition? Definition of deposition 1a law : a testifying especially before a court was sworn in before giving his deposition.…

Bovine Serum Albumin (BSA) is used in a variety of laboratory applications including its function as a protein concentration standard, its function as a cell nutrient and its ability to stabilize enzymes during restriction digest. What is BSA made from? Bovine serum albumin structure and biological functions The BSA molecule consists of 583 amino acids,…

Particularly in the realm of complex numbers and irrational numbers, and more specifically when speaking of the roots of polynomials, a conjugate pair is a pair of numbers whose product is an expression of real integers and/or including variables. A complex number example: , a product of 13. How do you find a conjugate pair?…

The reference standard is the test, combination of tests, or procedure that is considered the best available method of categorising participants in a study of diagnostic test accuracy as having or not having a target condition. What is chemical reference standard? A designated primary chemical reference substance is one that is widely acknowledged to have…

The total number of possible orbitals with the same value of l (a subshell) is 2l + 1. Thus, there is one s-orbital for ml = 0, there are three p-orbitals for ml = 1, five d-orbitals for ml = 2, seven f-orbitals for ml = 3, and so forth. The principal quantum number defines…

Filtrate refers to liquid which has passed through the process of filtration. In filtration, all fluids are strained. Larger particles are stuck in the straining media, while tinier particles as well as liquids pass through, becoming filtrate. It is, therefore, the end product of liquid filtration. What is filtrate and residue? Solution : During the…

An alpha (symbol: α) hydrogen is a hydrogen atom on an alpha carbon in an organic molecule; a hydrogen atom on a beta carbon is a beta hydrogen, and so on (α, ß, γ, δ…). What does alpha hydrogen mean in organic chemistry? The alpha carbon (Cα) in organic molecules refers to the first carbon…

Mass spectrometry (MS) is an analytical technique that measures the mass-to-charge ratio of charged particles. It is used for determining masses of particles, for determining the elemental composition of a sample or molecule. What does MS stand for in organic chemistry? Ms. Methanesulfonyl (Mesyl, CH3SO2) What do the initials MS stand for? M.S. or MS…

pKa is a number that describes the acidity of a particular molecule. It measures the strength of an acid by how tightly a proton is held by a Bronsted acid. The lower the value of pKa, the stronger the acid and the greater its ability to donate its protons. What is pKa and pH? pKa…

DCC (dicyclohexyl carbodiimide) is one of the most frequently used coupling agents, especially in organic synthesis applications. It has been used for peptide synthesis since 1955 (Sheehan and Hess, 1955) and continues to be a popular choice for creating peptide bonds (Barany and Merrifield, 1980). What is the purpose of DCC? Normal Function The DCC…

Examples: spectrum obtained from carbon arc, incandescent solids, liquids gives continuous spectra. (ii) Line emission spectrum (or line spectrum): Suppose light from hot gas is allowed to pass through prism, line spectrum is observed. Line spectra are also known as discontinuous spectra. What is an emission spectrum Class 11? When the radiations emitted from some…

A beaker is a cylindrical glass or plastic vessel used for holding liquids. It is a multi- purpose piece of equipment used for containing a chemical reaction, measuring liquids, heating them over a Bunsen burner’s flame or collecting them in a titration experiment. What is a beaker easy definition? Definition of beaker 1 : a…

Invert sugar is a liquid sweetener made from table sugar (sucrose) and water. It’s formed when the bonds between the sugars in sucrose are broken, resulting in a thick, sweet syrup comprised of 50% fructose and 50% glucose. What is the difference between sucrose and invert sugar? Sucrose is a disaccharide, meaning it is made…

Charcoal is largely pure carbon. Therefore, its chemical formula remains the same as carbon which is C. It is black and can be used for making fires. What is the charcoal explain? Charcoal is an odorless, tasteless, fine black powder, or black porous solid consisting of carbon, and any remaining ash, obtained by removing water…

Use of glass rod during decantation of a liquid ensures that the liquid to be poured does not stick to the walls of the glassware and is directly poured into it without any spillage and spatter. It is useful during pouring of reactive chemicals. Why are stirring rods made of glass? Glass rod are corrosion…